Largest Schools in Frederick County Public Schools (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 64 schools in Frederick County Public Schools, Maryland. Rank positions shown on each profile are within United States and Maryland.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Gov. Thomas Johnson High Frederick · High · Grades 9–12	Public	2,066	53.0 Top 50%	48% Math proficiency	2,066
2	Urbana High Ijamsville · High · Grades 9–12	Public	1,989	80.6 Top 10%	84% Math proficiency	1,989
3	Frederick High Frederick · High · Grades 9–12	Public	1,821	49.3 Lower 50%	45% Math proficiency	1,821
4	Tuscarora High Frederick · High · Grades 9–12	Public	1,735	62.9 Top 50%	59% Math proficiency	1,735
5	Oakdale High Ijamsville · High · Grades 9–12	Public	1,702	80.2 Top 10%	79% Math proficiency	1,702
6	Linganore High Frederick · High · Grades 9–12	Public	1,647	77.8 Top 10%	75% Math proficiency	1,647
7	Walkersville High Walkersville · High · Grades 9–12	Public	1,181	65.1 Top 50%	66% Math proficiency	1,181
8	Oakdale Elementary Ijamsville · Elementary · Grades PK–5	Public	1,167	66.7 Top 50%	64% Math proficiency	1,167
9	Urbana Middle Ijamsville · Middle · Grades 6–8	Public	1,090	82.1 Top 10%	70% Math proficiency	1,090
10	Oakdale Middle Ijamsville · Middle · Grades 6–8	Public	1,085	77.8 Top 25%	59% Math proficiency	1,085
11	Middletown High Middletown · High · Grades 9–12	Public	1,059	77.6 Top 10%	77% Math proficiency	1,059
12	Crestwood Middle Frederick · Middle · Grades 6–8	Public	996	36.4 Lower 50%	30% Math proficiency	996
13	Waverley Elementary Frederick · Elementary · Grades PK–5	Public	965	23.7 Lower 50%	27% Math proficiency	965
14	Brunswick High Brunswick · High · Grades 9–12	Public	910	64.7 Top 50%	57% Math proficiency	910
15	Green Valley Elementary Monrovia · Elementary · Grades K–5	Public	850	65.3 Top 50%	56% Math proficiency	850
16	Sugarloaf Elementary Frederick · Elementary · Grades K–5	Public	845	65.9 Top 50%	12.2% Free/reduced-price lunch	845
17	Catoctin High Thurmont · High · Grades 9–12	Public	823	57.5 Top 50%	57% Math proficiency	823
18	West Frederick Middle Frederick · Middle · Grades 6–8	Public	820	45.3 Lower 50%	37% Math proficiency	820
19	Windsor Knolls Middle Ijamsville · Middle · Grades 6–8	Public	812	76.3 Top 25%	58% Math proficiency	812
20	Brunswick Elementary Brunswick · Elementary · Grades PK–5	Public	804	45.8 Lower 50%	38% Math proficiency	804
21	Tuscarora Elementary Frederick · Elementary · Grades PK–5	Public	793	46.9 Lower 50%	40% Math proficiency	793
22	Middletown Middle Middletown · Middle · Grades 6–8	Public	784	75.3 Top 25%	59% Math proficiency	784
23	Whittier Elementary Frederick · Elementary · Grades PK–5	Public	779	57.1 Top 50%	51% Math proficiency	779
24	Walkersville Middle Walkersville · Middle · Grades 6–8	Public	779	54.4 Top 50%	39% Math proficiency	779
25	Ballenger Creek Middle Frederick · Middle · Grades 6–8	Public	777	49.2 Lower 50%	36% Math proficiency	777
26	Urbana Elementary Frederick · Elementary · Grades PK–5	Public	736	78.0 Top 25%	76% Math proficiency	736
27	Ballenger Creek Elementary Frederick · Elementary · Grades PK–5	Public	715	51.2 Top 50%	47% Math proficiency	715
28	Monocacy Middle Frederick · Middle · Grades 6–8	Public	710	35.2 Lower 50%	26% Math proficiency	710
29	Twin Ridge Elementary Mt Airy · Elementary · Grades PK–5	Public	703	52.8 Top 50%	44% Math proficiency	703
30	Walkersville Elementary Walkersville · Elementary · Grades PK–5	Public	692	46.1 Lower 50%	41% Math proficiency	692
31	Blue Heron Elementary New Market · Elementary · Grades PK–5	Public	680	73.9 Top 25%	8.5% Free/reduced-price lunch	680
32	New Market Middle New Market · Middle · Grades 6–8	Public	676	70.4 Top 25%	51% Math proficiency	676
33	North Frederick Elementary Frederick · Elementary · Grades PK–5	Public	660	52.8 Top 50%	45% Math proficiency	660
34	Brunswick Middle Brunswick · Middle · Grades 6–8	Public	638	53.0 Top 50%	34% Math proficiency	638
35	Yellow Springs Elementary Frederick · Elementary · Grades PK–5	Public	628	61.5 Top 50%	51% Math proficiency	628
36	Lincoln Elementary Frederick · Elementary · Grades PK–5	Public	615	30.8 Lower 50%	27% Math proficiency	615
37	Orchard Grove Elementary Frederick · Elementary · Grades PK–5	Public	613	48.8 Lower 50%	45% Math proficiency	613
38	Butterfly Ridge Elementary Frederick · Elementary · Grades PK–5	Public	607	25.5 Lower 50%	16% Math proficiency	607
39	Spring Ridge Elementary Frederick · Elementary · Grades PK–5	Public	605	43.8 Lower 50%	38% Math proficiency	605
40	Hillcrest Elementary Frederick · Elementary · Grades PK–5	Public	581	25.5 Lower 50%	21% Math proficiency	581
41	Gov. Thomas Johnson Middle Frederick · Middle · Grades 6–8	Public	573	50.0 Top 50%	41% Math proficiency	573
42	New Market Elementary New Market · Elementary · Grades PK–5	Public	571	76.0 Top 25%	68% Math proficiency	571
43	Glade Elementary Walkersville · Elementary · Grades PK–5	Public	561	65.2 Top 50%	54% Math proficiency	561
44	Carroll Manor Elementary Adamstown · Elementary · Grades PK–5	Public	530	65.7 Top 50%	60% Math proficiency	530
45	Deer Crossing Elementary New Market · Elementary · Grades PK–5	Public	528	75.9 Top 25%	65% Math proficiency	528
46	Valley Elementary Jefferson · Elementary · Grades PK–5	Public	525	65.2 Top 50%	58% Math proficiency	525
47	Monocacy Elementary Frederick · Elementary · Grades PK–5	Public	523	46.2 Lower 50%	40% Math proficiency	523
48	Thurmont Middle Thurmont · Middle · Grades 6–8	Public	507	52.2 Top 50%	39% Math proficiency	507
49	Centerville Elementary Frederick · Elementary · Grades PK–5	Public	471	84.0 Top 10%	78% Math proficiency	471
50	Middletown Primary Middletown · Elementary · Grades PK–2	Public	463	64.6 Top 50%	23.5% Free/reduced-price lunch	463
51	Middletown Elementary Middletown · Elementary · Grades 3–5	Public	460	76.3 Top 25%	63% Math proficiency	460
52	Kemptown Elementary Monrovia · Elementary · Grades K–5	Public	448	75.8 Top 25%	64% Math proficiency	448
53	Myersville Elementary Myersville · Elementary · Grades K–5	Public	402	69.8 Top 25%	62% Math proficiency	402
54	Frederick Classical Charter Frederick · Elementary · Grades K–8	Charter	376	69.5 Top 25%	54% Math proficiency	376
55	Thurmont Primary Thurmont · Elementary · Grades PK–2	Public	350	54.1 Top 50%	55.1% Free/reduced-price lunch	350
56	Carroll Creek Montessori Public Charter Frederick · Elementary · Grades PK–8	Charter	317	51.6 Top 50%	27% Math proficiency	317
57	Thurmont Elementary Thurmont · Elementary · Grades 3–5	Public	283	48.0 Lower 50%	46% Math proficiency	283
58	New Midway/Woodsboro Elementary Keymar · Elementary · Grades PK–5	Public	269	45.1 Lower 50%	42% Math proficiency	269
59	Liberty Elementary Frederick · Elementary · Grades PK–5	Public	265	46.6 Lower 50%	42% Math proficiency	265
60	Parkway Elementary Frederick · Elementary · Grades PK–5	Public	263	62.3 Top 50%	57% Math proficiency	263
61	Emmitsburg Elementary Emmitsburg · Elementary · Grades PK–5	Public	211	50.4 Top 50%	47% Math proficiency	211
62	Sabillasville Environmental School Sabillasville · Elementary · Grades K–8	Charter	196	72.5 Top 25%	64.5% Math proficiency	196
63	Wolfsville Elementary Myersville · Elementary · Grades PK–5	Public	163	60.9 Top 50%	47% Math proficiency	163
64	Lewistown Elementary Thurmont · Elementary · Grades PK–5	Public	152	42.7 Lower 50%	37% Math proficiency	152

Gov. Thomas Johnson High in Frederick leads the 2025 list of largest schools in Frederick County Public Schools with Enrollment 2,066. Of the 64 schools shown, 61 are public, 3 are charter.

For the full picture see the wider Maryland largest schools rankings, every school on the Frederick County Public Schools page, or the comparison tool to put a shortlist side by side.

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Frequently asked questions

What is the best largest school in Frederick County Public Schools?

Gov. Thomas Johnson High in Frederick, Maryland ranks first among largest schools in Frederick County Public Schools with Enrollment 2,066 (Enrollment: 2,066).

How are largest schools in Frederick County Public Schools ranked?

Schools with the highest enrollment. Only schools eligible for the Success Index (US) are included; the index is shown alongside for context.

Are these 2025 rankings official?

No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.